Engine-valve



B1B. NYHAGEN.

ENGINE VALVE.

APPLICATION FILED AUG-25. 1911- RENEWED FEB-253M919.

Patented Feb. 10,1920.

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WITNESSES Ai'ToRNEY B. R. NYHAGEN.

ENGINE VALVE.

APPLICATION FILED AUG-25, 19H. RENEWED FEB. 28. I919.

1,330,649. I Patented Feb. 10,1920.

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k ,7 B -|NVENTOR W E E R: ITN ss 5 j? ATTORN EV TNITED STATES PATENT ()EFICE.

BARN EY R. NYI-IAG-EN, OF NEW YORK, N. Y.

ENGINE-VALVE.

Application filed August 25, 1917, Serial No. 188,250. Renewed February 28, 1919.

To all whom it may concern:

Be it known that I, BAR'Nn Y R. NYHAGEN, a citizen of the United States, residing at New York city, in the county of New York and State of New York, have invented new and useful Improvements in En inc-Valves, of which the following is a speci cation.

This invention relates to engine valves and is in the nature of improvement upon and modification of the valve structure set forth in my original application filed April 142, 1917, Serial No. 162,104: and renewal application filed Feb. 28, 1919, and bearing Serial No. 279,888, and patented Oct. 7th, 1919, and bearing the Patent Number 1,318,227.

One of the chief objects of the present invention is to produce a valve structure which will admit of a comparatively free and unresisted movement of the fresh and burned charges to and from the combustion chamber of the cylinder of the engine in connection with which the valve is employed.

A further object of the invention is to produce a valve structure which is capable of being used in conjunction with one or more cylinders, enabling a single valve to take care of the fresh charges admitted to one cylinder or to adjacent cylinders and also take care of theexhaust of the-burned gases therefrom.

With the above and other objects in view,

the. invention consists in the noval construction, combination and arrangement of parts, herein fully described, illustrated and claimed.

In the accompanying drawings:

Figure 1 is a horizontal section taken through adjacent cylinders of an engine; and also through the valve structure, said secti'on being taken in line with the inlet and exhaust ports of the cylinders.

Fig. 2 is a vertical section on the line 2-4 of Fig. 1 showing the left hand piston at the beginning of the suction stroke and the right. hand piston at the beginning of the power stroke.

F ig. 3 is. a similar view showing the left hand piston the. beginning of the compression stroke and the right hand piston at the; beginning of the xhaust; stroke.

Fig. 4 is a similar section showing the left hand piston at the beginning of the eX- Specification of Letters Patent.

Patented Feb. 10, 1920.

Serial No. 279,889.

plosion or working stroke and the piston of the right hand cylinder at the beginning of the suction stroke.

F 5 is a similar View showing the left hand piston at the beginning of the exhaust stroke and the rig-ht hand piston at the beginning of the compression stroke, and

Fig. 6 is a. vertical section taken at a right angle: to Figs. 2, 3, 4 and 5.

Referring primarily to Fig. 1', A and B designate adjacent cylinders in which are mounted the reciprocatory pistons a and b, the cylinders A and B being inclosed by a water" jacket 0.

In the preferred embodiment of the invention,- a substantially cylindrical valve casing or chamber 1 is cast integrally with. the cylinders A and B and communicates by means of ports 2 and 3' with the cylinders A. and B, respectively. The casing 1 also communicates with the cylinders A and B by other ports 4L and 5 arranged at a lower point- 5 designates an intake pipe or manifold which may have as many branches as necessary in accordance with the number of cylinders employed, 6 designating one branch of the manifold 5- which communicates with an intake port 7- leading into the valve casing 1..' Arranged below the intake manifold 5 is a similarly formed exhaust manifold, a branch of which leads to an exhaust port 8' of thevalve casing 1. Each of ther mani'folds comprises a pipe9. The head portion of the manifold isshown as cast integrally with the cylinder block, the pipe 9 being formed separately therefrom and having a flange 10' which is secured to the manifold head by fastening means 11.

The valve structure comprises an outer sl'eevedike member 6 and an inner sleevelike member D.

The inner valve member D is of hollow formation and generally cylindrical in shape, being closed atv its upper end by a head 12 and at its lower end by ahead 13, the latter being inclined as shown to provi-de underlying space 14: in which is located the pivot pin 15 which connects the upper extremity of one of the valve: operating rods 16- to the respective valve member, said rod being connected to the crank of an underlying crank shaft (not shown): which controls the movements of the valve member.

Another connecting rod 17 extends from said crank shaft to the outer valve member C to which it is connected by a pivot 18.

- Extending diametrically through the valve member D is an inclined intake passage 19 terminating in the ports 20 and 21. Tntersecting the intake passage 19 is a l 'anch passage 22 (see Fig. 6) terminating in a port 23. The passages 19 and 22 are out off from the remainder of the interior of the valve member D thereby leaving an exhaust receiving space comprising the upper and lower portions and 25 and the intermediate connecting portion 26 which lies at one side of the branch intake passage The valve member D is further provided with an upper exhaust port 27 at one side and another exhaust port 28 at the opposite side and lower than. the port 27, the latter being located at a lower level than the exhaust'port 28. The valve member D is further provided with auxiliary exhaust ports 30 and 31 arranged near the lower end thereof and at diametrically opposite points, the port 30'being located at a higher elevation than the port 31.

The outer valve member C is of true cylindrical formation and open at both ends. Said outer valve member comprises an intake po132 near the upper end thereof and is formed in the opposite wall thereof with another intake port 83 located at a lower point than the port Said valve member C is also formed with an exhaust port 3% in one side thereof, and is formed in the opposite side thereof with an exhaust port 35 arranged about on the same level as the port The cranks of the shaft to which the rods 16 and 17 are connected are offset approximately 90 from each other. The cycles of operation in one cylinder are followed by the corresponding cycles of operation in the adjacent cylinder. For example. referring to Fig. 2, the valve members C and D have reached a position where the left hand piston a is at the beginning of its suction stroke while the left hand piston b is at the beginning of its power stroke. At-

this time the valve members C and D are both moving upwardly but the valve member D is traveling faster than the valve member C, the connecting rod 17 being at or near its lowest center while the connecting rod 16 is on the quarter and therefore at its maximum rate of movement. In Fig. 8 the left hand piston a is at the beginning of its compression stroke while the piston b is at the beginning of its exhaust stroke, the valve member C is moving upwardly at nearly its maximum while the member D is nearly at the upper limit of its movement and is therefore moving very slowly or is practically at rest.

In Fig. 4 the left hand piston 61 is at the beginning of its explosion or working stroke while the piston Z) is at the beginning of its suction stroke. At this time the valve member D is moving upwardly at its maximum speed while the member G is practically on center or nearly stationary. In Fig. 5 the left hand piston a is at the beginning of its exhaust stroke while the right hand piston b is at the beginning of its compression stroke. At this time the valve member D is nearly stationary, while the valve member 0 is moving downwardly at approximately its maximum speed.

From the foregoing description taken in connection with the accompanying drawings, it will now be understood that by reason of the valve structure employing the two telescopically related and interfitting valve members, and the manner in which they are operated, one of the adjacent pistons is operating two strokes ahead and behind the piston of the other cylinder. In a four cylinder engine embodying the improved valve mechanism, the cycles follow each other in the four cylinders, one cylinder intaking while another cylinder is firing, another exhausting, and the remaining cylinder compressing. This produces a nicely balanced engine and only two valves are required for the four cylinders. In the case of a two cylinder engine, only one valve is necessary.

I claim:

1. The combination of a cylinder having a single combined intake and exhaust port communicating with the head of the combustion chamber thereof, a valve, a valve casing for said VtLlX'e havin a port in constant register with said cylinder, port, and also having an exhaust port, said valve comprising two reciprocatory hollow and substantially cylindrical members working telescopically one within the other, and means for reciprocating said valve members out of unison so that when one of said valve members is at rest or nearly so, the other valve member is traveling at its maximum speed or nearly so, said valve members having ports in their side walls adapted to register with each other and with said cylinder port, and the valve casing inlet and exhaust ports, the inner valve member c0mprising an inclosed intake passage extending diametrically therethrough, and also having a ported exhaust space surrounding said intake passage.

2. The combination of adjacently located cylinders, a valve common to said cylinders, a valve casing for said valve having a port leading to each cylinder and acting both as an intake and an exhaust port, an intake port leading to said valve casing, and an ex haust port leading from said valve casing, said valve comprising two hollow and substantially cylindrical members working telescopically one within the other, and means unison so that when one of said valve members is at rest or nearly so, the other valve member is traveling at its maximum speed or nearly so, said valve members having ports in their side walls adapted to register with each other and with the cylinder port and the valve casing intake and exhaust ports, the

inner valve member comprising an inclosed intake passage extending diametrically and at an inclination therethrough.

S. The combination of adj acently located cylinders, a valve common to said cylinders, a valve casing for said valve having a ort leading to each cylinder and acting bot as an intake and an exhaust port, an intake port leading to said valve casing, and an exhaust port leading from said valve casing, said valve comprising two hollow and substantially cylindrical members working telescopically one within the other, and means for reciprocating said valve members out of unison so that when one of said valve members is at rest or nearly so, the other member is traveling at its maximum speed or nearly so, said valve members having ports in their side Walls adapted to register with each other and with the cylinder port and the valve casing intake and exhaust ports, the inner valve member comprising an inclosed intake passage extending diametrically and at an inclination therethrough, and also comprising a second intake port and a branch passage connecting the last named port with said inclined intake passage.

4. The combination of adjacently located cylinders, a valve common to said cylinders, a valve casing for said valve having a port leading to each cylinder and acting both as an intake and an exhaust port, an intake port leadingto said valve casing, and an exhaust port leading from said valve casing, said valve comprising two hollow and substantially cylindrical members working telescopically one within the other, and means for reciprocating said valve members out of unison, so that when one of said valve members is at rest or nearly so, the other valve member is traveling at its maximum speed or nearly so, said valve members having ports in their side walls adapted to register with each other and with the cylinder port and the valve casing intake and exhaust ports, said valve members being further provided with auxiliary exhaust ports and the cylinders being provided with corresponding auxiliary exhaust ports, the said exhaust ports of the valve members and the cylinders being arranged to register With each other when the pistons are near the lowest limit of their movement.

5 In an internal combustion engine, the combination of a cylinder having a single port communicating with the combustion chamber thereof and acting both as an intake port and an exhaust port, a valve comprising tWo reciprocatory hollow and substantially cylindrical members working telescopically one within the other and means for reciprocating said valve members out of unison, the inner valve member comprising an inclosed intake passage extending diametrically therethrough and a ported exhaust space surrounding said intake passage.

In testimony whereof I affix my signature.

BARNEY R. NYHAGEN. 

